Two couples were playing cards.
John accidentally dropped some cards on the floor. When he
bent down under the table to pick them up, he noticed that Bill's wife
was not
wearing any underwear! Shocked by this, John hit his head on
the table and
emerged red-faced. Later, John went to the kitchen to get some
refreshments.

Bill's wife followed him and asked, "Did you see anything that
you liked under there?" John admitted that, well, yes he did.
She said
"You can have it, but it will cost you $100." After a minute
or two,
John indicated that he was interested. She informed him that
since Bill works
Friday afternoons and John doesn't, John should come to her house
around 2:00 PM on Friday.

Friday came and John went to her house at 2:00 PM.
After paying her $100 they went to the bedroom, had sex, and then
John left.

Bill came home about 6:00 PM. He asked his wife, "Did John
come by this afternoon?" Reluctantly, she replied, "Yes, he did
stop by for
a few minutes." Next Bill asked, "Did John give you $100?"
She
thinks 'Oh hell, he knows!' Finally she says, "Yes, he did give
me $100."
"Good," Bill says. "John came by the office this morning and
borrowed $100
from me. He said that he would stop by our house on his way home and
pay me
back.